I have been through an Meta interview once, and it was one problem in 45 mins. Not sure whether the standard has been changed or not. I would clarify with the recruiter and ask them how detailed they would like for each of the questions. 2 questions sound a lot.

I have seen candidates who are really good at coding interview and finish in 20 mins. For the rest of the 25 mins, the same coding question was expanded to a bigger scope.